Protect to visit method definitions too many time

src/compiler/crystal/tools/expand.cr

@@ -67,6 +67,7 @@ module Crystal
   class ExpandVisitor < Visitor
     def initialize(@target_location : Location)
       @nodes = [] of ASTNode
+      @in_def_instance = false
       @message = "no expansion found"
     end
 
@@ -82,7 +83,9 @@ module Crystal
       if type.is_a?(DefInstanceContainer)
         type.def_instances.values.try do |typed_defs|
           typed_defs.each do |typed_def|
+            @in_def_instance = true
             typed_def.accept(self)
+            @in_def_instance = false
           end
         end
       end
@@ -96,7 +99,9 @@ module Crystal
 
     def process(result : Compiler::Result)
       result.program.def_instances.each_value do |typed_def|
+        @in_def_instance = true
         typed_def.accept(self)
+        @in_def_instance = false
       end
 
       result.program.types?.try &.values.each do |type|
@@ -114,8 +119,15 @@ module Crystal
       end
     end
 
+    def visit(node : Def | FunDef)
+      @in_def_instance && contains_target(node)
+    end
+
     def visit(node : Call)
       if loc_start = node.location
+        # If node.obj (a.k.a. an receiver) is a Path, it may be macro call and node.obj has no expansion surely.
+        # Otherwise, we cannot decide node.obj has no expansion.
+        loc_start = node.name_location unless node.obj.is_a?(Path)
         loc_end = node.name_end_location
         if @target_location.between?(loc_start, loc_end)
           if node.expanded